Doctor Tests Positive for Virus After Treating Victim

Nigerian health authorities said they had confirmed a second case of Ebola in Africa's most populous nation and quarantined eight additional people, all of whom helped treat a Liberian-American who died of the disease in Lagos in July.

(Ebola virus: Read the Journal's latest article.)

"One of the doctors who attended to the...

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Ebola Threat Expands in West Africa

Nigerian health authorities confirmed a second case of Ebola in Africa's most populous nation and quarantined eight additional people. Dr. William Karesh discusses the outbreak on the News Hub with Sara Murray. Photo: Getty Images.